Doubletree.



0. TOWNER.

DOUBLETREE.

APPLIUATION FILED OCT. 17, 1913.

1,101,975. I Patented June 30,1914.

W/TNESSES INVENTOH.

COLUMBIA PLANOGRAPH CO.,WASHINGTON. D. c.

ORRIN TOWNEB, OF ST; CATHLARINES, ONTARIO, CANADA.

DOUBLETREE.

Specification of Letters Patent.

Patented June 36, 1914.

Application filed October 17, 1913. Serial No. 795,730.

TocZZ whom it may concern Be it known that I, Onnrn TowNER, of the cityof St. Catharines, in the county of Lincoln, in the Provinceof Ontario,Canada, have invented certain new and useful Improvements in Doubletreesand the like, of which the following is the specification.

My invention relates to improvements in double trees and the like andthe object of my invention is first to provide a simple inexpensive formof double tree which will be strong, durable and comparatively light inweight and in which the strain brought to bear thereon will be equallydistributed throughout its length and in which the several partscomprising the double tree may be easily and quickly replaced whenbroken or worn during use.

It consists essentially of a double tree bar having diagonal boresextending out through the ends of the double tree, a bearing mem bersecured centrally of the double tree having lugs extending outwardly ateach end thereof, a truss bar extending through the lugs and at its endsthrough the diagonal bores so as to project beyond the ends of thedouble tree and having suitably threaded ends and nuts threaded on theends, a clevis swung upon the bar between the aforesaid bearing lugs andspacing sleeve surrounding the bar between the ends of the clevis ashereinafter more particularly explained by the following specification.

Figure 1, is a plan view of the double tree and swingle trees attachedthereto. Fig. 2, is a vertical section through the center of the doubletree. Fig. 3, is a perspective detail of the spacing sleeve.

In the drawings like letters of reference indicate corresponding partsin each figure.

A is a double tree bar formed of any suitable material preferably ofwood and provided with reduced ends A through which extend diagonalbores A B is a bracket secured centrally of the bar A by rivets B. Thebracket B is provided with outwardly extending lugs B and B havingcentral orifices 13*.

C is a clevis, the arms of which are provided with an orifice C.

E is a truss bar extending through the orifices B and G of the lugs Band B and clevis C respectively. The ends of the truss bar E areslightly bent to extend through the oblique bores A The projecting endsE of the bar are suitably threaded and provided with nuts E G is aspacing sleeve extending between the ends of the clevis C so as to holdthem apart against the lugs B and B F are sleeves surrounding thereduced end of the bar A and provided with lugs F.

H are swingle trees which are constructed with the sleeves H suitablysecured thereon centrally of their length and provided with an outwardlyprojecting lug H H is a clevis extending to each side of the lug H I isa truss rod extending through the lug H and at the ends through thebores H corresponding to the bores A and provided with nuts I WVhen inoperation it will be seen that while the strain on the double tree isdistributed equally throughout its length the direct torque will bebrought to bear on the lugs B and B and the ends of the clevis, having atendency to draw the end of the clevis together. In order to preventthis I have provided the tubular sleeve G surrounding the bar E as abovedescribed, the tubular sleeve G not only serves to reinforce the bar Ebut also reinforces the clevis. The ends being held in a definiteposition between the lugs and the sleeve.

hat I claim as my invention is:

A double tree comprising a bar having fiat sides and diagonal end bores,a center bracket U-shaped in cross section and into which the flat sidedbar fits, securing bolts extending through the sides of the bracket andthe bar, lugs extending from the ends of the base of the U-brackethaving horizontal orifices, a truss rod extending through the orificesof the lugs and at the ends through the bores, a clevis swung on thetruss rod and bearing against the inner side of the bracket lugs, aspacing sleeve mounted on the truss rod and fitting at its ends againstthe ends of the clevis, sleeves surrounding the ends of the truss rodand bar, Washers fitting on the ends of the truss rod against the endsof the double tree bar and nuts threaded on the ends of the truss rodand against the washers, as and for the purpose specified.

ORRIN TOl/VNER. Witnesses:

NORA SHEEHAN, Nnrr'rrn F. BOYLE.

Copies of this patent may he obtained for five cents each, by addressingthe Commissioner of Patents.

Washington, D. G.

